{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T21:07:42Z","timestamp":1767992862311,"version":"3.49.0"},"reference-count":35,"publisher":"The Journal of Rheumatology","issue":"12","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Rheumatol"],"accepted":{"date-parts":[[2018,3,23]]},"published-print":{"date-parts":[[2018,12]]},"abstract":"<jats:sec><jats:title>Objective.<\/jats:title><jats:p>To examine the frequency of impaired spinal mobility in patients with chronic back pain of short duration and to compare it with the frequency of impaired spinal mobility in patients with axial spondyloarthritis (axSpA), possible SpA, and no SpA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods.<\/jats:title><jats:p>The SpondyloArthritis Caught Early (SPACE) cohort includes patients with chronic back pain (\u2265 3 mos, \u2264 2 yrs, onset &lt; 45 yrs). Spinal mobility was assessed with lateral spinal flexion, chest expansion, cervical rotation, occiput-to-wall distance, and lumbar flexion. Hip mobility was assessed with intermalleolar distance. Mobility measures were defined as impaired if below the 5th percentile reference curve from general population, adjusted for age and height when appropriate. Proportions of patients categorized with impaired mobility were examined with chi square.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results.<\/jats:title><jats:p>In total, 393 patients with chronic back pain were included: 142 axSpA, 140 possible SpA, and 111 no SpA. Impairment in \u2265 1 mobility measure was present in 66% of all patients. The most frequently impaired mobility measure was lateral spinal flexion (40%), followed by chest expansion (22%), cervical rotation (18%), intermalleolar distance (17%), lumbar flexion (15%), and occiput-to-wall distance (11%). No statistically significant differences in proportion of patients with impaired spinal mobility were found between patients with axSpA and the other subgroups in any of the tests.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion.<\/jats:title><jats:p>Two out of 3 patients with chronic back pain of short duration had impaired spinal mobility compared to the general population. Impaired spinal mobility occurs as often in patients with early axSpA as in other forms of chronic back pain.<\/jats:p><\/jats:sec>","DOI":"10.3899\/jrheum.170786","type":"journal-article","created":{"date-parts":[[2018,7,1]],"date-time":"2018-07-01T11:29:46Z","timestamp":1530444586000},"page":"1643-1650","source":"Crossref","is-referenced-by-count":15,"title":["Frequency of Impaired Spinal Mobility in Patients with Chronic Back Pain Compared to Patients with Early Axial Spondyloarthritis"],"prefix":"10.3899","volume":"45","author":[{"given":"Camilla","family":"Fongen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hanne","family":"Dagfinrud","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Inger Jorid","family":"Berg","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sofia","family":"Ramiro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Floris","family":"van Gaalen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert","family":"Landew\u00e9","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roberta","family":"Ramonda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D\u00e9sir\u00e9e","family":"van der Heijde","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karen Minde","family":"Fagerli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2262","published-online":{"date-parts":[[2018,7,1]]},"reference":[{"key":"2025021012250876000_45.12.1643.1","doi-asserted-by":"crossref","first-page":"E35","DOI":"10.36076\/ppj.2009\/12\/E35","article-title":"Comprehensive review of epidemiology, scope, and impact of spinal pain","volume":"12","author":"Manchikanti","year":"2009","journal-title":"Pain Physician"},{"key":"2025021012250876000_45.12.1643.2","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2013-204428"},{"key":"2025021012250876000_45.12.1643.3","doi-asserted-by":"publisher","DOI":"10.1093\/rheumatology\/34.11.1074"},{"key":"2025021012250876000_45.12.1643.4","doi-asserted-by":"publisher","DOI":"10.1002\/acr.20168"},{"key":"2025021012250876000_45.12.1643.5","doi-asserted-by":"publisher","DOI":"10.1002\/acr.21804"},{"key":"2025021012250876000_45.12.1643.6","doi-asserted-by":"crossref","first-page":"446","DOI":"10.1002\/acr.22180","article-title":"Identifying axial spondyloarthritis in Dutch primary care patients, ages 20\u201345 years, with chronic low back pain","volume":"66","author":"van Hoeven","year":"2014","journal-title":"Arthritis Care Res"},{"key":"2025021012250876000_45.12.1643.7","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(11)60071-8"},{"key":"2025021012250876000_45.12.1643.8","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2016-210770"},{"key":"2025021012250876000_45.12.1643.9","doi-asserted-by":"publisher","DOI":"10.1016\/j.rdc.2012.08.001"},{"key":"2025021012250876000_45.12.1643.10","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbspin.2013.03.003"},{"key":"2025021012250876000_45.12.1643.11","doi-asserted-by":"publisher","DOI":"10.1093\/rheumatology\/kes066"},{"key":"2025021012250876000_45.12.1643.12","doi-asserted-by":"publisher","DOI":"10.3899\/jrheum.100987"},{"key":"2025021012250876000_45.12.1643.13","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2008.104018"},{"key":"2025021012250876000_45.12.1643.14","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2009.124206"},{"key":"2025021012250876000_45.12.1643.15","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2004.029728"},{"key":"2025021012250876000_45.12.1643.16","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2009.108233"},{"key":"2025021012250876000_45.12.1643.17","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2013-204953"},{"key":"2025021012250876000_45.12.1643.18","doi-asserted-by":"publisher","DOI":"10.1093\/rheumatology\/ket164"},{"key":"2025021012250876000_45.12.1643.19","doi-asserted-by":"publisher","DOI":"10.1002\/art.1780270401"},{"key":"2025021012250876000_45.12.1643.20","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2009.110767"},{"key":"2025021012250876000_45.12.1643.21","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2015-207823"},{"key":"2025021012250876000_45.12.1643.22","first-page":"1694","article-title":"Defining spinal mobility in ankylosing spondylitis (AS). 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